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Grokking the Coding Interview Patterns in C++

Solution: Single Number

Explore how to use bitwise XOR operations to identify the single number in an array where every other element appears twice. Understand the XOR properties and apply them to achieve a linear time and constant space solution. This lesson helps you implement and analyze an efficient algorithm crucial for coding interviews.

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Statement

Given an array of integers, where every element appears twice except for one, find the element that occurs only once.

Note: The solution must have linear runtime and constant space complexity.

Constraints:

  • 1≤1 \leq
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